From: Arnd Bergmann <arnd@xxxxxxxx>
commit 9a0a930fe2535a76ad70d3f43caeccf0d86a3009 upstream.
binder_uintptr_t is not the same as uintptr_t, so converting it into a
pointer requires a second cast:
drivers/android/binder.c: In function 'binder_translate_fd_array':
drivers/android/binder.c:2511:28: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
2511 | sender_ufda_base = (void __user *)sender_uparent->buffer + fda->parent_offset;
| ^
Fixes: 656e01f3ab54 ("binder: read pre-translated fds from sender buffer")
Acked-by: Todd Kjos <tkjos@xxxxxxxxxx>
Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> # build-tested
Acked-by: Christian Brauner <christian.brauner@xxxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Link: https://lore.kernel.org/r/20211207122448.1185769-1-arnd@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Carlos Llamas <cmllamas@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/android/binder.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -2908,7 +2908,8 @@ static int binder_translate_fd_array(str
*/
fda_offset = (parent->buffer - (uintptr_t)t->buffer->user_data) +
fda->parent_offset;
- sender_ufda_base = (void __user *)sender_uparent->buffer + fda->parent_offset;
+ sender_ufda_base = (void __user *)(uintptr_t)sender_uparent->buffer +
+ fda->parent_offset;
if (!IS_ALIGNED((unsigned long)fda_offset, sizeof(u32)) ||
!IS_ALIGNED((unsigned long)sender_ufda_base, sizeof(u32))) {
